| Document and Entity Information | Nov. 12, 2024 |
| Cover [Abstract] | |
| Amendment Flag | false |
| Entity Central Index Key | 0001772177 |
| Document Type | 8-K |
| Document Period End Date | Nov. 12, 2024 |
| Entity Registrant Name | KURA SUSHI USA, INC. |
| Entity Incorporation State Country Code | DE |
| Entity File Number | 001-39012 |
| Entity Tax Identification Number | 26-3808434 |
| Entity Address, Address Line One | 17461 Derian Avenue |
| Entity Address, Address Line Two | Suite 200 |
| Entity Address, City or Town | Irvine |
| Entity Address, State or Province | CA |
| Entity Address, Postal Zip Code | 92614 |
| City Area Code | (657) |
| Local Phone Number | 333-4100 |
| Written Communications | false |
| Soliciting Material | false |
| Pre Commencement Tender Offer | false |
| Pre Commencement Issuer Tender Offer | false |
| Security 12b Title | Class A Common Stock, par value $0.001 per share |
| Trading Symbol | KRUS |
| Security Exchange Name | NASDAQ |
| Entity Emerging Growth Company | false |
